Road-grader.



W. N. WILLIAMS.

ROAD GRADER.

APPLIOATION FILED JULY 2,1903. BENBWED JULY 25,1904.

PATENTED JAN. 10, 1905.

2 SHEETS-SHEET I.

lrlczr.. E

@www You WMmY//wms PATENTED JAN. 10, 1905.

W. N. WILLIAMS.

ROAD GRADER.

APPLIOATION FILED JULY 2.1903. RENBWBDJULY 25.1904.

2 SHEETS-SHEET 2.-

VUNITED STATES Patented January 10, 1905.

PATENT OFFICE.

ROAD-GRADER.

SPECIFICATION forming part of Letters Patent No. 779,513, dated January lO, 1905. Application filed July 2, 1903. Renewed July 25, 1904. Serial No. 218,112.

To all whom, it may concern:

Be it known that I, IMILLIAM N. VILLIAMs, a citizen of the United States, residing at Yelcome, in the county of Martin and State of Minnesota, have invented certain new and useful Improvements in Road-Graders; and I do declare the following to bea full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in machines for grading and leveling roads. j

The object of the invention is to provide a machine of this character which is simple in construction, durable in use, eflicient in operation,and comparatively inexpensive of production.

With this 4and other objects in view the invention consists of certain novel Jfeatures oi construction, combination, and arrangement of parts, as will be more fully described, and particularly pointedout in the appended claims.

In the drawings, Figure 1 is a top plan view of my improved road-grader. Fig'. 2 is an end elevation of the same. Eig. 3 is a side elevation. Eig. 4 is a verticallongitudinal sectional view through the machine. Fig. 5 is a detail sectional view through one of the adjusting-levers, showing the manner of fastening the same.

In the embodiment of my invention as illustrated in the accompanying drawings, 1 denotes a rectangular frame comprising two side beams 2, which are connected at their center and at their ends by cross-beams 3 and which may be further braced and connected by -tie rods orbolts 4. Said side beams, which serve as runners to support the frame, have their ends rounded, as shown at 5, and are provided with half-round steel shoes 6, which sink into the ground as the frame is drawn along' and prevent the same from slipping to either side.

Vithin the frame 1 are two adjustable Scrapers 7 and 8, which are similar in construction and are disposed diagonally in divergent relation to each other. Each of said scrapers comprises two boards 9, bolted together, as

shown at 10,and to the lower outer face of each of which is secured steel blades 11. One end, l2,

of each oil said blades is bent, as shown at 13, and extends toward the adjacent end of the frame. Said ends 12 are strengthened by diagonal braces 14, which extend from the top of the scraper-s to the ends 12. These ends 12 and braces 14 form arms which are pivoted at 15 to the inside of the runners 2 adjacent to their ends to permit the Scrapers to have a slight swinging motion. In order to adjust said scrapers and hold them at the desired angle, I provide two levers 16 for each scraper. The levers of each pair have one of their ends pivoted between brackets 17 upon the runners 2 adjacent to the ends of the Scrapers, and the opposite ends of said levers are formed with handles 18. Each of the levers is connected bya link or bai-19 to the end of its scraper which it is adapted to adjust, and the free ends of the levers are adjustably connected to the upper ends of vertical standards 20, secured upon the Scrapers. Said standards have their upper ends slotted to receive bolts 21, projecting through the levers 16 adjacent to their handles 18. Washers 22 and nuts 23, provided with crank-handles 24, are placed upon the ends of said bolts, as shown in Fig. 5, to fasten said levers to said standards. Owing to the crossing of each pair of levers and the manner in which they are connected to the runners and the Scrapers, the latter may be quickly adjusted to raise or lower either end by simply loosening the nuts 23, operating the levers', and then tightening said nuts, as will be readily understood. As previously stated, both scrapers are alike, and they are disposed at ditferent angles, so that but one is used atatime when the machine is employed for grading' purposes. Either side of either scraper may be used, and to permit this attaching-clips 241 are secured upon each end of the runners to receive draft-chains 25, to either of which one or more draft-animals may be attached in order to draw the machine along the road or ground. The machine is adapted to operate upon one-half of the road, and as it is pulled forward the scraper, which is properly adjusted, will scrape oii' the high places along one side of the road and force IOO the loose earth toward the center of the road, illing up the low places or hollows as the machine moves along. A portion of the bottom of each runner 2 is cut away, as shown at 26, adjacent to the ends of the Scrapers to permit the loose earth to discharge from between the runners. It will be seen that the scrapers may be adjusted at any desired angle within the framc-that is to say, either of the ends of the Scrapers may be raised or lowered with respect to the runners 2, So that the latter act as gages for the Scrapers. rIhe bevel or incline given to each Side ot' the road will depend upon the elevation of the inner end and the depression of the outer end of the scraper in use as the machine is moved along. Owing to the manner in which the scrapers are pivoted, the same will be tilted rearwardly to a slight extent when a deep cut is being' made. WV hen one scraper is being used to bevel or grade the road, the other scraper is elevated and out of operation; but when it is desired to level or smooth the road both scrapers may be used, and they are then adjusted in a horizontal position. By providing the two Scrapers it will be unnecessary to turn the machine around, since either side oi: the road may be operated upon when the machine iS moved in either direction.

From the 'foregoing' description, taken in connection with the accompanying'drawings, the construction and operation ot' the invention will be readily understood without requiring a more extended explanation.

Various changes in the Jforni, proportion, and the minor details of construction may be resorted to without departing Jrom the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A machine of the character described, comprising a suitable frame, an angularly-disposed scraper pivotally mounted in said frame, and levers pivoted to said frame and adjustably supporting said Scraper, substantially as described.

2. A machine of the character described, comprising a Suitable frame having runners, a d iagonally-disposed scraper pivotally mounted between said runners, standards upon said scraper, levers pivotally connected to said runners, links connecting said levers and said scraper, and means for adjustably securing said levers to said standards, substantially as described.

3. A machine of the character described, comprising a Suitable frame having' runners, diagonally-disl'iosed Scrapers pivotally mounted between said runners, slotted standards upon said scrapers,'levers having one end pivotally connected to said runners, links connecting said levers and Said Scrapers, and bolts upon the free ends of said levers adjustably secured in the slots of Said standards, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM N. WILLIAMS.

' Vitnesses:

A. L GAMBLE, J oHN WoLroRD. 

